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A 0D Lead‐Free Hybrid Crystal with Ultralow Thermal Conductivity
Author(s) -
Haque Md Azimul,
Gandi Appala Naidu,
Mohanraman Rajeshkumar,
Weng Yakui,
Davaasuren Bambar,
Emwas AbdulHamid,
Combe Craig,
Baran Derya,
Rothenberger Alexander,
Schwingenschlögl Udo,
Alshareef Husam N.,
Dong Shuai,
Wu Tom
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201809166
Subject(s) - materials science , thermal conductivity , hybrid material , nanotechnology , supramolecular chemistry , photovoltaics , crystal engineering , hydrogen bond , phonon , catalysis , crystal structure , conductivity , band gap , chemical physics , chemical engineering , optoelectronics , molecule , crystallography , chemistry , condensed matter physics , organic chemistry , composite material , ecology , physics , photovoltaic system , biology , engineering
Organic–inorganic hybrid materials are of significant interest owing to their diverse applications ranging from photovoltaics and electronics to catalysis. Control over the organic and inorganic components offers flexibility through tuning their chemical and physical properties. Herein, it is reported that a new organic–inorganic hybrid, [Mn(C 2 H 6 OS) 6 ]I 4 , with linear tetraiodide anions exhibit an ultralow thermal conductivity of 0.15 ± 0.01 W m −1 K −1 at room temperature, which is among the lowest values reported for organic–inorganic hybrid materials. Interestingly, the hybrid compound has a unique 0D structure, which extends into 3D supramolecular frameworks through nonclassical hydrogen bonding. Phonon band structure calculations reveal that low group velocities and localization of vibrational energy underlie the observed ultralow thermal conductivity, which could serve as a general principle to design novel thermal management materials.